<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://cdn.bootcss.com/jquery/1.11.3/jquery.js"></script>
</head>
<body>
<input type="radio" name="type" value="test1">test1
<input type="radio" name="type" value="test1">test2

<script>
    // 在chrome中不用打断点调试
    // $("input[name='type']:eq(1)").attr("checked","checked");
    // form.render();
</script>
</body>
</html>